Embed Webpage into WordPress Page Problem

I have created a webpage titled
https://napleshiddenstorage.com/55.htm
I would like to “ember” or make this page “appear” within a “post” or “page”at https://napleshiddenstorage.com/storage-estimation/
I have tried using “XZY HTML” plugin, but it makes the page look really nasty.
Example.
https://napleshiddenstorage.com/aaa/
The 55.htm has a swf file within it, but I am really at a stand still this morning.
Any ideas?
Deirdre